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OEM Carrier Contactor 1-Pole 25A 24V for PH1PNB024000AAAA
Carrier

OEM Carrier Contactor 1-Pole 25A 24V for PH1PNB024000AAAA

SKU: CARRIE-PH1PNB024000AAAA-CONTACTOR-HN51KB024 Brand: Carrier
✓ Guaranteed to fit PH1PNB024000AAAA — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier 1-Pole Contactor 25A 24V Coil for Model PH1PNB024000AAAA

This is the OEM factory-replacement contactor for the Carrier PH1PNB024000AAAA residential heat pump system. Part number HN51KB024, this single-pole contactor is the high-voltage relay that completes the circuit to your compressor and condenser fan motor every time your thermostat calls for cooling or heating. When the contactor fails — due to pitted contacts, a burned coil, or welded contact points — the unit will either fail to start entirely, run continuously without shutting off, or emit a loud chattering or humming noise from the outdoor cabinet. Replacing a worn contactor is one of the most cost-effective preventive maintenance steps you can perform on any residential heat pump.

  • Specs: 1-Pole | 25A Full Load Amps (FLA) | 24V AC Coil (50/60 Hz) | Definite Purpose contactor | Factory OEM part number HN51KB024
  • OEM vs Generic: This is a genuine Carrier OEM contactor — manufactured to exact coil resistance, contact gap, and ampacity tolerances. Aftermarket contactors frequently use lighter-gauge contacts that pit and weld faster, shortening equipment life and risking compressor damage.
  • Install difficulty: 2/5 — Disconnect all power at the breaker and the disconnect box before opening the access panel. Photograph all wiring before removal. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, multimeter. Verify 24V coil pull-in after installation before closing the panel.
  • Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Factory-specified replacement for Carrier model PH1PNB024000AAAA. Always verify the OEM part number on your existing contactor's label and confirm pole count and amperage rating against your unit's wiring diagram before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before you buy — contact us today and get your system back up and running fast.

Shipping Information

  • Orders placed before 3PM CST ship same business day
  • Standard delivery: 2-5 business days
  • Express shipping available at checkout
  • Free shipping on orders over $99
  • Tracking number emailed upon shipment

Return Policy

  • 30-day returns on unused parts in original packaging
  • Electrical parts (capacitors, contactors, control boards) are final sale once installed
  • Email info@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Contactor fit my Carrier PH1PNB024000AAAA?
Yes. This is the factory-specified OEM contactor for the Carrier PH1PNB024000AAAA. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.
How do I replace the contactor on my Carrier PH1PNB024000AAAA?
Difficulty: Medium (30–45 min)
Step 1: Turn off breaker. Step 2: Open condensing unit panel. Step 3: Photograph ALL wiring on the contactor. Step 4: Label each wire with tape. Step 5: Disconnect wires and remove old contactor. Step 6: Mount new contactor, reconnect wires matching your photo. Step 7: Restore power and test.
My AC clicks but the compressor won’t turn on. What’s wrong?
Clicking from the outdoor unit without the compressor starting = worn contactor. The contactor sends power to the compressor. When its contacts are pitted, it clicks but can’t make solid contact. Look for: visible pitting/burn marks on the contactor face, intermittent operation, or buzzing.
Is this contactor compatible with Bryant or Payne too?
Many Carrier parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.
Should I use OEM or aftermarket for my Carrier contactor?
OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.
How fast does National HVAC Parts ship?
Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.
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Mike Rivera
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